diff --git a/install.sh b/install.sh
index ab995841b99fe239911d71e5f02278eb1d4ab72e..bed9890757dfcbbf0da59fb7cee08e8fd7124789 100644
--- a/install.sh
+++ b/install.sh
@@ -96,6 +96,9 @@ mailServerPort="25"
 # sender
 mailSender="xxxxxxxxxx"
 
+# user
+mailUser="xxxxxxxxxx"
+
 # sender password
 mailPassword="xxxxxxxxxx"
 
@@ -389,6 +392,7 @@ sed -i ${txt} "s#mail.protocol.*#mail.protocol=${mailProtocol}#g" conf/alert.pro
 sed -i ${txt} "s#mail.server.host.*#mail.server.host=${mailServerHost}#g" conf/alert.properties
 sed -i ${txt} "s#mail.server.port.*#mail.server.port=${mailServerPort}#g" conf/alert.properties
 sed -i ${txt} "s#mail.sender.*#mail.sender=${mailSender}#g" conf/alert.properties
+sed -i ${txt} "s#mail.user.*#mail.user=${mailUser}#g" conf/alert.properties
 sed -i ${txt} "s#mail.passwd.*#mail.passwd=${mailPassword}#g" conf/alert.properties
 sed -i ${txt} "s#mail.smtp.starttls.enable.*#mail.smtp.starttls.enable=${starttlsEnable}#g" conf/alert.properties
 sed -i ${txt} "s#mail.smtp.ssl.trust.*#mail.smtp.ssl.trust=${sslTrust}#g" conf/alert.properties